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Novel engineered proteins for mechanomaterials

Giuseppe Portale

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 6,   Pages 1122-1123 doi: 10.1007/s11705-020-1941-x

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Study of base friction simulation tests based on a complicated engineered bridge slope

Liu HE, Guang WU, Hua WANG

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 4,   Pages 393-397 doi: 10.1007/s11709-012-0174-6

Abstract: The findings show that the whole engineered slope tends to stabilize in its natural state, whereas instabilities

Keywords： base friction test     slope stability evaluation     bridge slope    

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Effect of natural pozzolan content on the properties of engineered cementitious composites as repair

Said CHOUCHA, Amar BENYAHIA, Mohamed GHRICI, Mohamed Said MANSOUR

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 3,   Pages 261-269 doi: 10.1007/s11709-017-0394-x

Abstract: effect of Natural Pozzolan (NP) content on the mechanical properties and durability characteristics on Engineered

Keywords： natural pozzolan     engineered cementitious composites     mechanical strengths     elastic modulus     capillary absorption    

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Enhanced atrazine removal using membrane bioreactor bioaugmented with genetically engineered microorganism

LIU Chun, HUANG Xia

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 4,   Pages 452-460 doi: 10.1007/s11783-008-0050-8

Abstract: Bioaugmentation with genetically engineered microorganisms (GEMs) in a membrane bioreactor (MBR) forAn atrazine-degrading genetically engineered microorganism (GEM) with green fluorescent protein was inoculated
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Preparation and characterization of hydrothermally engineered TiO

Kanchapogu Suresh, G. Pugazhenthi, R. Uppaluri

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 2,   Pages 266-279 doi: 10.1007/s11705-017-1608-4

Abstract: This work targets the preparation and characterization of an inexpensive TiO -fly ash composite membrane for oily wastewater treatment. The composite membrane was fabricated by depositing a hydrophilic TiO layer on a fly ash membrane via the hydrothermal method, and its structural, morphological and mechanical properties were evaluated. The separation potential of the composite membrane was evaluated for 100–200 mg·L synthetic oily wastewater solutions. The results show that the composite membrane has excellent separation performance and can provide permeate stream with oil concentration of only 0.26–5.83 mg·L . Compared with the fly ash membrane in the average permeate flux and performance index (49.97 × 10 m ·m ·s and 0.4620%, respectively), the composite membrane exhibits better performance (51.63 × 10 m ·m ·s and 0.4974%). For the composite ash membrane, the response surface methodology based analysis inferred that the optimum process parameters to achieve maximum membrane flux and rejection are 207 kPa, 200 mg·L and 0.1769 m·s for applied pressure, feed concentration and cross flow velocity, respectively. Under these conditions, predicted responses are 41.33 × 10 m ·m ·s permeate flux and 98.7% rejection, which are in good agreement with the values obtained from experimental investigations (42.84 × 10 m ·m ·s and 98.82%). Therefore, we have demonstrated that the TiO -fly ash composite membrane as value added product is an efficient way to recycle fly ash and thus mitigate environmental hazards associated with the disposal of oily wastewaters.

Keywords： TiO2-fly ash membrane     oily wastewater     fouling     microfiltration    

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Activated carbon induced oxygen vacancies-engineered nickel ferrite with enhanced conductivity for supercapacitor

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 2088-2100 doi: 10.1007/s11705-023-2352-6

Abstract: Activated carbon induced oxygen vacancies-engineered nickel ferrite with enhanced conductivity for supercapacitor

Keywords： nickel ferrite conductivity     carbon oxygen vacancies    

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Research progress of defect-engineered UiO-66(Zr) MOFs for photocatalytic hydrogen production

Frontiers in Energy 2021, Volume 15, Issue 3,   Pages 656-666 doi: 10.1007/s11708-021-0765-9

Abstract: In recent years, defect-engineered Zr-based UiO-66 metal-organic frameworks (UiO-66(Zr) metal-organicresearch results of synthesis methods, characterization technologies, and application fields of defect-engineered

Keywords： defect engineering     metal-organic frameworks     UiO-66     photocatalysis    

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Synthetically engineered microbes reveal interesting principles of cooperation

Michael D. Dressler,Corey J. Clark,Chelsea A. Thachettu,Yasmine Zakaria,Omar Tonsi Eldakar,Robert P. Smith

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 1,   Pages 3-14 doi: 10.1007/s11705-016-1605-z

Abstract: Overall, the use of engineered cooperative microbes has allowed the field to verify existing, and develop

Keywords： synthetic biology     engineered bacteria     cooperation     cheater     quorum sensing    

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diversity of NO reductases, new tools for monitoring, and insights into NO production in natural and engineered

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 10, doi: 10.1007/s11783-022-1562-3

Abstract:

● 548 representative nor genes were collected to create complete phylogenetic trees.

Keywords： N2O     Greenhouse gas     NO reductase     NO dismutase     Primer     Crystal structure    

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Genetically Engineered Crops

Lance A. Davis

Engineering 2016, Volume 2, Issue 3,   Pages 268-269 doi: 10.1016/J.ENG.2016.03.007

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Photocatalytic degradation of the acetaminophen by nanocrystal-engineered TiO

Reza Katal, Mohammad Tanhaei, Jiangyong Hu

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 2, doi: 10.1007/s11783-020-1319-9

Abstract: The photocatalyst was prepared by sputtering and then engineered by thermal treatment (annealing at 300

Keywords： Acetaminophen     TiO2     Thin film     Batch     Continuous    

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Efficient acetoin production from pyruvate by engineered whole-cell biocatalysis

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 4,   Pages 425-436 doi: 10.1007/s11705-022-2229-0

Abstract: Acetoin is an important platform chemical, which has a wide range of applications in many industries. Halomonas bluephagenesis, a chassis for next generation of industrial biotechnology, has advantages of fast growth and high tolerance to organic acid salts and alkaline environment. Here, α-acetolactate synthase and α-acetolactate decarboxylase from Bacillus subtilis 168 were co-expressed in H. bluephagenesis to produce acetoin from pyruvate. After reaction condition optimization and further increase of α-acetolactate decarboxylase expression, acetoin production and yield were significantly enhanced to 223.4 mmol·L–1 and 0.491 mol·mol–1 from 125.4 mmol·L–1 and 0.333 mol·mol–1, respectively. Finally, the highest titer of 974.3 mmol·L–1 (85.84 g·L–1) of acetoin was accumulated from 2143.4 mmol·L–1 (188.6 g·L–1) of pyruvic acid within 8 h in fed-batch bioconversion under optimal reaction conditions. Moreover, the reusability of the cell catalysis was also tested, and the result illustrated that the whole-cell catalysis obtained 433.3, 440.2, 379.0, 442.8 and 339.4 mmol·L–1 (38.2, 38.8, 33.4, 39.0 and 29.9 g·L–1) acetoin in five repeated cycles under the same conditions. This work therefore provided an efficient H. bluephagenesis whole-cell catalysis with a broad development prospect in biosynthesis of acetoin.

Keywords： acetoin     pyruvate     α-acetolactate synthetase     α-acetolactate decarboxylase     Halomonas bluephagenesis     whole-cell biocatalysis    

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Controlling various contaminants in wastewater effluent through membranes and engineered wetland

Sarper SARP, Sungyun LEE, Noeon PARK, Nguyen Thi HANH, Jaeweon CHO

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 1,   Pages 98-105 doi: 10.1007/s11783-009-0006-7

Abstract: For effective wastewater reclamation and water recovery, the treatment of natural and effluent organic matters (NOM and EfOM), toxic anions, and micropollutants was considered in this work. Two different NOM (humic acid of the Suwannee River, and NOM of US and Youngsan River, Korea), and one EfOM from the Damyang wastewater treatment plant, Korea, were selected for investigating the removal efficiencies of tight nanofiltration (NF) and ultrafiltration (UF) membranes with different properties. Nitrate, bromate, and perchlorate were selected as target toxic anions due to their well known high toxicities. Tri-(2-chloroethyl)-phosphate (TCEP), oxybenzone, and caffeine, due to their different and p values, were selected as target micropollutants. As expected, the NF membranes provided high removal efficiencies in terms of all the tested contaminants, and the UF membrane provided fairly high removal efficiencies for anions (except for nitrate) and the relatively hydrophobic micropollutant, oxybenzon

Keywords： wastewater reclamation     natural organic matter (NOM)     effluent organic matter (EfOM)     membranes     wetlands    

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Efficient production of D-1,2,4-butanetriol from D-xylose by engineered

Shewei Hu, Qian Gao, Xin Wang, Jianming Yang, Nana Xu, Kequan Chen, Sheng Xu, Pingkai Ouyang

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 4,   Pages 772-779 doi: 10.1007/s11705-018-1731-x

Abstract: We have developed a whole-cell bioconversion system for the production of D-1,2,4-butanetriol (BT) from renewable biomass. A plasmid pETduet- T7- T7- was constructed and transformed to BL21(DE3) to obtain the whole cells of BL21- capable of bioconversion D-xylose to BT. Then, the factors including carbon sources, nitrogen sources, metal ions, and culture conditions (pH, temperature, IPTG) were identified, and their effects on the whole-cell activity for BT production were investigated. To obtain the highest whole-cell activity, the optimal cultivation parameters are: 15 g·L yeast extract, 5 g·L sucrose, 3g·L KH PO , 5 g·L NaCl, 3g·L NH Cl, 0.25 g·L MgSO ?7H O and 1 mL·L the mixture of trace elements. With the optimized whole cells of BL21- , 60 g·L of xylose was converted to 28g·L BT with a molar yield of 66 %, which is higher than those reported in the biotechnological system.

Keywords： D-1     2     4-butanetriol     whole-cell bioconversion     carbon source     nitrogen sources     metal ions     culture conditions    

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Engineered to Go Fast, Maglev Trains Inch Forward

Chris Palmer

Engineering 2021, Volume 7, Issue 7,   Pages 891-893 doi: 10.1016/j.eng.2021.06.001

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Title Author Date Type Operation

Novel engineered proteins for mechanomaterials

Giuseppe Portale

Journal Article

Study of base friction simulation tests based on a complicated engineered bridge slope

Liu HE, Guang WU, Hua WANG

Journal Article

Effect of natural pozzolan content on the properties of engineered cementitious composites as repair

Said CHOUCHA, Amar BENYAHIA, Mohamed GHRICI, Mohamed Said MANSOUR

Journal Article

Enhanced atrazine removal using membrane bioreactor bioaugmented with genetically engineered microorganism

LIU Chun, HUANG Xia

Journal Article

Preparation and characterization of hydrothermally engineered TiO

Kanchapogu Suresh, G. Pugazhenthi, R. Uppaluri

Journal Article

Activated carbon induced oxygen vacancies-engineered nickel ferrite with enhanced conductivity for supercapacitor

Journal Article

Research progress of defect-engineered UiO-66(Zr) MOFs for photocatalytic hydrogen production

Journal Article

Synthetically engineered microbes reveal interesting principles of cooperation

Michael D. Dressler,Corey J. Clark,Chelsea A. Thachettu,Yasmine Zakaria,Omar Tonsi Eldakar,Robert P. Smith

Journal Article

diversity of NO reductases, new tools for monitoring, and insights into NO production in natural and engineered

Journal Article

Genetically Engineered Crops

Lance A. Davis

Journal Article

Photocatalytic degradation of the acetaminophen by nanocrystal-engineered TiO

Reza Katal, Mohammad Tanhaei, Jiangyong Hu

Journal Article

Efficient acetoin production from pyruvate by engineered whole-cell biocatalysis

Journal Article

Controlling various contaminants in wastewater effluent through membranes and engineered wetland

Sarper SARP, Sungyun LEE, Noeon PARK, Nguyen Thi HANH, Jaeweon CHO

Journal Article

Efficient production of D-1,2,4-butanetriol from D-xylose by engineered

Shewei Hu, Qian Gao, Xin Wang, Jianming Yang, Nana Xu, Kequan Chen, Sheng Xu, Pingkai Ouyang

Journal Article

Engineered to Go Fast, Maglev Trains Inch Forward

Chris Palmer

Journal Article